:root {
  --bg: #f5f1e8;
  --panel: #fffdf8;
  --panel-strong: #fffaf0;
  --text: #20201b;
  --muted: #646052;
  --border: #d9d0bd;
  --accent: #165b47;
  --accent-soft: #d7ebe4;
  --accent-strong: #0f3f32;
  --shadow: 0 18px 40px rgba(36, 33, 23, 0.08);
  --max-width: 1360px;
  --radius: 18px;
  --mono: "SFMono-Regular", "Menlo", "Monaco", monospace;
  --sans: "IBM Plex Sans", "Segoe UI", sans-serif;
}

:root[data-theme="blueprint"] {
  --bg: #eef4fb;
  --panel: #f9fcff;
  --panel-strong: #eef6ff;
  --text: #16253a;
  --muted: #566981;
  --border: #c7d7ec;
  --accent: #0f5da6;
  --accent-soft: #dbeafd;
  --accent-strong: #0a4478;
  --shadow: 0 18px 40px rgba(15, 53, 92, 0.12);
}

:root[data-theme="graphite"] {
  --bg: #171a1d;
  --panel: #21262b;
  --panel-strong: #1b2025;
  --text: #edf1f5;
  --muted: #a0acb8;
  --border: #39424a;
  --accent: #f2b84b;
  --accent-soft: #3c3216;
  --accent-strong: #ffd37b;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top right, rgba(22, 91, 71, 0.12), transparent 30%),
    linear-gradient(180deg, #fbf8f1 0%, var(--bg) 100%);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
}

:root[data-theme="blueprint"] body {
  background:
    radial-gradient(circle at top right, rgba(15, 93, 166, 0.12), transparent 32%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
}

:root[data-theme="graphite"] body {
  background:
    radial-gradient(circle at top right, rgba(242, 184, 75, 0.1), transparent 28%),
    linear-gradient(180deg, #111417 0%, var(--bg) 100%);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code,
pre {
  font-family: var(--mono);
}

pre {
  overflow-x: auto;
  padding: 1rem;
  background: #191a18;
  color: #f5f1e8;
  border-radius: 14px;
}

:root[data-theme="blueprint"] pre {
  background: #0f1b2d;
  color: #ebf4ff;
}

:root[data-theme="graphite"] pre {
  background: #0d1013;
  color: #f7f0dc;
}

code {
  background: rgba(22, 91, 71, 0.08);
  padding: 0.1rem 0.35rem;
  border-radius: 6px;
}

.shell {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(251, 248, 241, 0.88);
  border-bottom: 1px solid rgba(217, 208, 189, 0.9);
}

:root[data-theme="blueprint"] .site-header {
  background: rgba(248, 251, 255, 0.88);
  border-bottom-color: rgba(199, 215, 236, 0.9);
}

:root[data-theme="graphite"] .site-header {
  background: rgba(20, 24, 28, 0.88);
  border-bottom-color: rgba(57, 66, 74, 0.9);
}

.site-header .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--text);
  text-decoration: none;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.9rem;
  background: linear-gradient(135deg, var(--accent), #2f826b);
  color: #fff;
  font-weight: 700;
  box-shadow: var(--shadow);
}

.top-nav {
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-end;
  gap: 0.75rem;
  font-size: 0.9rem;
  white-space: nowrap;
}

.top-nav a {
  color: var(--text);
}

.header-actions {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  flex-wrap: nowrap;
  min-width: 0;
}

.picker-row {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: flex-end;
  flex: 0 0 auto;
}

.language-picker,
.theme-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.language-picker label,
.theme-picker label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 700;
}

.language-picker select,
.theme-picker select {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel);
  color: var(--text);
  padding: 0.42rem 1.75rem 0.42rem 0.75rem;
  font: inherit;
  box-shadow: var(--shadow);
}

.language-picker select {
  min-width: 6rem;
}

.theme-picker select {
  min-width: 7rem;
}

@media (max-width: 1240px) {
  .site-header .shell {
    gap: 0.75rem;
  }

  .top-nav {
    gap: 0.55rem;
    font-size: 0.84rem;
  }

  .language-picker,
  .theme-picker {
    gap: 0.45rem;
    font-size: 0.84rem;
  }

  .language-picker label,
  .theme-picker label {
    font-size: 0.72rem;
  }
}

.language-picker select:focus,
.theme-picker select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.75rem 0 3rem;
}

.sidebar {
  align-self: start;
  position: sticky;
  top: 5.8rem;
  display: grid;
  gap: 1rem;
}

.sidebar-group,
.toc-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.05rem;
}

.sidebar-group h2,
.toc-card h2 {
  margin: 0 0 0.7rem;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.sidebar-group a {
  display: block;
  margin: 0.35rem 0;
}

.content {
  min-width: 0;
}

.doc-page {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-header {
  padding: 2rem 2rem 1.2rem;
  background:
    linear-gradient(135deg, rgba(22, 91, 71, 0.12), rgba(22, 91, 71, 0.02)),
    var(--panel-strong);
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 0.4rem;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  font-weight: 600;
}

.page-header h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.08;
}

.page-description {
  margin: 0.85rem 0 0;
  max-width: 60rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.page-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 1.5rem;
  padding: 1.75rem 2rem 2rem;
}

.page-main {
  min-width: 0;
}

.page-main h2,
.page-main h3,
.page-main h4 {
  scroll-margin-top: 6rem;
}

.page-main table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.4rem;
}

.page-main th,
.page-main td {
  border: 1px solid var(--border);
  padding: 0.75rem;
  text-align: left;
  vertical-align: top;
}

.page-main th {
  background: rgba(22, 91, 71, 0.08);
}

.page-main blockquote {
  margin: 1.25rem 0;
  padding: 0.9rem 1rem;
  border-left: 4px solid var(--accent);
  background: rgba(22, 91, 71, 0.06);
}

:root[data-theme="blueprint"] .page-main th,
:root[data-theme="blueprint"] .page-main blockquote {
  background: rgba(15, 93, 166, 0.08);
}

:root[data-theme="graphite"] .page-main th,
:root[data-theme="graphite"] .page-main blockquote {
  background: rgba(242, 184, 75, 0.08);
}

.page-main ul,
.page-main ol {
  padding-left: 1.25rem;
}

.page-main hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  padding: 1.5rem 0 2rem;
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-list li + li {
  margin-top: 0.45rem;
}

.toc-level-3 {
  padding-left: 0.85rem;
}

.toc-level-4 {
  padding-left: 1.5rem;
}

@media (max-width: 1080px) {
  .header-actions,
  .top-nav {
    flex-wrap: wrap;
  }

  .layout,
  .page-body {
    grid-template-columns: 1fr;
  }

  .sidebar,
  .page-toc {
    position: static;
  }
}

@media (max-width: 720px) {
  .site-header .shell {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .top-nav {
    justify-content: flex-start;
  }

  .picker-row,
  .language-picker,
  .theme-picker {
    margin-left: 0;
  }

  .page-header,
  .page-body {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}